diff options
Diffstat (limited to 'sysdeps/x86_64/multiarch/sched_cpucount.c')
| -rw-r--r-- | sysdeps/x86_64/multiarch/sched_cpucount.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/sysdeps/x86_64/multiarch/sched_cpucount.c b/sysdeps/x86_64/multiarch/sched_cpucount.c new file mode 100644 index 0000000000..dc20182df4 --- /dev/null +++ b/sysdeps/x86_64/multiarch/sched_cpucount.c @@ -0,0 +1,42 @@ +/* Count bits in CPU set. x86-64 multi-arch version. + This file is part of the GNU C Library. + Copyright (C) 2008 Free Software Foundation, Inc. + Contributed by Ulrich Drepper <drepper@redhat.com>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifdef SHARED +# include <sched.h> +# include "init-arch.h" + +# define __sched_cpucount static generic_cpucount +# include <posix/sched_cpucount.c> +# undef __sched_cpucount + +# define POPCNT(l) \ + ({ __cpu_mask r; \ + asm ("popcntq %1, %0" : "=r" (r) : "0" (l));\ + r; }) +# define __sched_cpucount static popcount_cpucount +# include <posix/sched_cpucount.c> +# undef __sched_cpucount + +libc_ifunc (__sched_cpucount, + INTEL_HAS_POPCOUNT || AMD_HAS_POPCOUNT + ? popcount_cpucount : generic_cpucount); +#else +# include_next <sched_cpucount.c> +#endif |